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1. (WO2018082347) WATER CHILLING UNIT

Pub. No.:    WO/2018/082347    International Application No.:    PCT/CN2017/094320
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Wed Jul 26 01:59:59 CEST 2017
IPC: F25B 31/00
F25B 49/02
Applicants: CHONGQING MIDEA GENERAL REFRIGERATION EQUIPMENT CO., LTD.
重庆美的通用制冷设备有限公司
MIDEA GROUP CO., LTD.
美的集团股份有限公司
Inventors: CHEN, Gaifang
陈改芳
Title: WATER CHILLING UNIT
Abstract:
Provided is a water chilling unit (100), comprising: a compressor (1), an oil separator (4) which is connected to a condenser (3), an evaporator (2) and an oil return device (5). In the oil return device (5), a lead-in end (a) of a Venturi ejector (51) is connected to an oil outlet port (41) of the oil separator (4) by means of a first connecting pipe (52), a negative pressure end (b) is connected to a liquid outlet port (21) of the evaporator (2) by means of a second connecting pipe (53), and a jet end (c) is connected to an oil return port (11) of the compressor (1) by means of a third connecting pipe (54), two ends of a fourth connecting pipe (55) are connected to the oil outlet port (41) of the oil separator (4) and the oil return port (11) of the compressor (1) respectively.